Determination and Thermodynamic Modeling of Solid–Liquid Phase Equilibrium for Succinic Acid in the Glutaric Acid + Adipic Acid + Ethyl Acetate Mixture and Adipic Acid in the Succinic Acid + Glutaric Acid + Ethyl Acetate Mixture

Huang, Yulan; Jiang, Chunhua; Lü, Jingjing; Chen, Honglin; Guo, Chunhao; Wang, Xunqiu

doi:10.1021/acs.jced.8b01127

Cited by 4 publications

(2 citation statements)

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“…In the absence of ionic species and water, the AIOMFAC model relies on the UNIFAC group contribution method. , Given the similarities between the molecules studied here, the mixtures are not expected to show significant non-ideality or phase separation. Indeed, diacids are generally considered to be solvents for each other . In Figure , we report the activity coefficients (γ) as a function of composition from the AIOMFAC model.…”

Section: Resultsmentioning

confidence: 99%

“…Indeed, diacids are generally considered to be solvents for each other. 32 In Figure 4, we report the activity coefficients (γ) as a function of composition from the AIOMFAC model. The largest values of γ are determined when the composition is at the extreme ends of the range, indicating that as the composition becomes enriched in one component, the other component would evaporate more rapidly relative to the ideal prediction.…”

Section: Physical Interpretation Of the Evaporation Of Solid Particlesmentioning

confidence: 99%

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Chemically Resolved Evaporation Dynamics of Dicarboxylic Acid Mixtures in Solid Particles

et al. 2023

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The evaporation rate and corresponding vapor pressure of dicarboxylic acids have been the subject of numerous scientific studies over the years, with reported values spanning several orders of magnitude. Recent work has identified the importance of considering the phase state of the material during evaporation, likely accounting for some of the variability in measured vapor pressures. In the homologous series of dicarboxylic acids, the phase state under dry conditions may be crystalline or amorphous, with particles of odd-carbon-numbered acids exhibiting tendencies to remain amorphous and spherical. Although measurements of vapor pressures for pure components make up most of the available literature data, for many applications, these compounds are not present in isolation. Additionally, many systems containing a semi-volatile material exist in a solid state, especially under dry and low relative humidity conditions. In this work, we explore the evaporation of compounds present in mixed solid-state particles. Specifically, we use single particle levitation coupled with mass spectrometry to measure the evolving composition of solid particles containing mixtures of glutaric acid and succinic acid, glutaric acid and adipic acid, and malonic acid and succinic acid. Under dry conditions, these systems exhibit non-spherical geometries consistent with crystallization of one or both components into an organic crystal. Our measurements allow the evaporation of each component in the mixture to be characterized independently and effective vapor pressures of the pure components to be inferred. The resulting vapor pressures are compared against pure component vapor pressures. We demonstrate that these mixtures exhibit thermodynamic ideality but can be influenced by limited diffusion in the solid phase. These are the first results in the literature that explore the thermodynamic and kinetic factors that control the evaporative evolution of mixed solid-state particles.

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Section: Resultsmentioning

confidence: 99%

Section: Physical Interpretation Of the Evaporation Of Solid Particlesmentioning

confidence: 99%